What is the Least Common Multiple of 42970 and 42978?

Least common multiple or lowest common denominator (lcd) can be calculated in two way; with the LCM formula calculation of greatest common factor (GCF), or multiplying the prime factors with the highest exponent factor.

Least Common Multiple of 42970 and 42978 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 42970 and 42978, than apply into the LCM equation.

GCF(42970,42978) = 2
LCM(42970,42978) = ( 42970 × 42978) / 2
LCM(42970,42978) = 1846764660 / 2
LCM(42970,42978) = 923382330

Least Common Multiple (LCM) of 42970 and 42978 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 42970 and 42978. First we will calculate the prime factors of 42970 and 42978.

Prime Factorization of 42970

Prime Factorization of 42978

Now multiplying the highest exponent prime factors to calculate the LCM of 42970 and 42978.

LCM(42970,42978) = 2¹ × 5¹ × 4297¹ × 3¹ × 13¹ × 19¹ × 29¹
LCM(42970,42978) = 923382330